土壤水含量、温度对松香甘油酯包膜复合肥养分释放动力学特性的影响  

Effects of soil water content and temperature on nutrient release dynamic characteristics of rosin glyceride coated compound fertilizer

作　　者：施卫省 杜芳林 刘建民 SHI Weisheng;DU Fanglin;LIU Jianmin(School of Architecture and Urban Planning,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学建筑与城市规划学院,云南昆明650500

出　　处：《磷肥与复肥》2021年第4期14-16,共3页Phosphate & Compound Fertilizer

基　　金：国家自然科学基金(20264002);校学科方向团队项目(201328);学院创新团队项目(20170109)。

摘　　要：以松香甘油酯为包膜材料制备包膜复合肥,研究土壤水含量、温度对包膜复合肥养分释放动力学特性的影响。结果表明:土壤水含量和土壤温度对松香甘油酯包膜复合肥养分累积溶出率影响较大,土壤水含量越大,其溶出率增加越快;温度越高,其溶出率越大,包膜复合肥养分日释放速率也在增大。松香甘油酯包膜复合肥养分释放期(t)与土壤水含量(w)、土壤温度(θ)的关系均为线性关系,t=287.6-3.43 w,r=0.99;t=209.6-13θ,r=0.97。The coated compound fertilizer is prepared with rosin glyceride as coating material,and the effects of soil water content and temperature on nutrient release dynamic characteristics of coated compound fertilizer are studied.The results show that soil water content and soil temperature have great influence on the cumulative dissolution rate of nutrient in rosin glyceride coated compound fertilizer,the higher the soil water content is,the faster the dissolution rate increases;The dissolution rate is increased with the temperature increase and the daily release rate of nutrient in coated compound fertilizer is also increasing.The relationship between nutrient release period(t),soil water content(w)and soil temperature(θ)are linear:t=287.6-3.43 w,r=0.99;t=209.6-13θ,r=0.97.

关 键 词：土壤水含量 土壤温度 松香甘油酯包膜复合肥 养分释放 动力学 建模 

分 类 号：TQ449.1[化学工程—化学肥料工业]